CRP seed for sale in Marshall County, Iowa.
Clarity Seed Farms sources, cleans, and blends Iowa-ecotype CRP seed for Marshall County landowners. Every mix is priced on pure live seed and matched to your CP practice code, your acres, and the Iowan Surface soils under your contract.
Marshall County's Iowa River corridor sits where lobe and Iowan Surface soils meet, so plans commonly carry both wet-basin and upland loam components.
Last updated July 18, 2026 · Clarity Seed Farms Editorial
Marshall County land and soils
Long, gentle slopes and open plains scoured by periglacial erosion, with scattered paha ridges and shallow limestone in the stream valleys.
Kenyon–Clyde–Floyd loams over glacial till, with sandy and gravelly outwash near the major rivers. Well drained on the rises, poorly drained in the swales.
Moisture: Predominantly mesic with dry pockets on outwash sand and wet swales along the drainageways.
Marshall County NRCS office
Your conservation plan, seeding specification, and practice approval all run through the local USDA Service Center. Verify your CP code and required species diversity there before you order seed.
NRCS Marshall County Field Office, co-located with the Farm Service Agency at the Marshalltown USDA Service Center.
Iowa NRCS field offices are occasionally consolidated across counties. Confirm the current address, phone number, and hours with the official locator below.
New to the paperwork? Read our CRP compliance checklist before your appointment.
Recommended CRP seed mixes for Marshall County
These mixes fit Iowan Surface soils and the practices most often approved in Marshall County. We adjust ratios to your conservation plan before quoting.
All-Iowa ecotype CP25 mesic prairie blend with 30+ species locally sourced.
70–90 species Leopold-inspired CP42 pollinator mix for maximum bloom diversity.
Native grass filter strip mix for CP21 water-quality buffers.
Diverse native mix for in-field CP43 prairie strips (STRIPS).
High-diversity CP25 mix with 40+ species at a 20/20 grass-to-forb ratio.
When to plant in Marshall County
Dormant seed November–early December or drill in late April through mid-May. Loam soils here firm up early, so spring drilling is more reliable than on lobe ground.
Biggest local challenge: Smooth brome and fescue sod. Two knockdown applications before seeding is the difference between a stand and a rescue job.
Planting windows by state →Species that perform here
Mixed grass–forb plantings here carry pheasants, bobolinks, and one of the strongest native bee complexes in eastern Iowa.
Full native species library →Marshall County CRP seed questions
Where can I buy CRP seed in Marshall County, Iowa?
Clarity Seed Farms sells CRP seed for sale in Marshall County, Iowa. We source, clean, and blend Iowa-ecotype native seed, then match the mix to your CP practice code and your Iowan Surface soils. Send your acres and practice number and we return a priced, PLS-based quote.
Which CRP mix works best in Marshall County?
Most Marshall County contracts land on CP25 or CP42. On Iowan Surface ground the deciding factor is moisture: Predominantly mesic with dry pockets on outwash sand and wet swales along the drainageways.
When should I plant CRP seed in Marshall County?
Dormant seed November–early December or drill in late April through mid-May. Loam soils here firm up early, so spring drilling is more reliable than on lobe ground.
Where is the NRCS office for Marshall County?
The NRCS field office serving Marshall County is normally at the USDA Service Center in Marshalltown, Iowa, co-located with the Farm Service Agency. Confirm the current address and hours with the USDA Service Center locator before you drive out.
How much CRP seed do I need per acre in Marshall County?
Iowa CP practices are specified in pure live seed per acre, and most CP25 and CP42 plans in Marshall County fall between 6 and 10 PLS pounds per acre depending on the forb ratio. Use our seeding rate estimator, then confirm against your conservation plan.
Ready to price seed for Marshall County?
Send acres, CP practice code, and your target planting date. We'll return a PLS-based quote built for your Iowan Surface soils.
Request a quote